Capture to pcap file in a temp directory

[msabramo]

Without this I was getting permission errors:

Called capture_packets
Parameters:
  {
    "interface": "en0",
    "duration": 120
  }
Result:
  Error: Command failed: /opt/homebrew/bin/tshark -i en0 -w temp_capture.pcap -a duration:120
  Capturing on 'Wi-Fi: en0'
  tshark: The file to which the capture would be saved ("temp_capture.pcap") could not be opened: Read-only file system.
  0 packets captured

This is with Cursor 1.1.2 on Mac OS 14.2.1 (23C71):

Version: 1.1.2
VSCode Version: 1.96.2
Commit: 87ea1604be1f602f173c5fb67582e647fcef6c40
Date: 2025-06-13T00:30:10.108Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 23.2.0